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Table 2 Values of Cronbach´s alpha coefficient por the REALD-29 PT (n = 206)

From: Validity and reliability of the Portuguese version of the rapid estimate of adult literacy in dentistry: REALD-29 PT

Variable Item (Portuguese Version) Item (English language) R R without item α without item
a2 Fumar Smoking 0.3179 .294 .894
a3 Fio dentário Floss 0.4841 .430 .891
a4 Escovar Brush 0.2867 .240 .894
a5 Polpa Pulp 0.5942 .553 .889
a6 Fluor Fluoride 0.5893 .529 .889
a7 Aparelho Braces 0.3850 .353 .893
a8 Genética Genetics 0.6454 .602 .888
a9 Restauração Restoration 0.4971 .462 .891
a10 Bruxismo Bruxism 0.5737 .516 .890
a11 Abcesso Abscess 0.6649 .613 .887
a12 Extração Extraction 0.5782 .533 .889
a13 Dentadura Denture 0.5352 .484 .890
a14 Esmalte Enamel 0.3969 .358 .893
a15 Dentição Dentition 0.6182 .564 .888
a16 Placa Plaque 0.3279 .293 .894
a17 Gengiva Gengiva 0.5564 .508 .890
a18 Mal oclusão Maloclusion 0.4648 .404 .892
a19 Incipiente Incipient 0.5502 .485 .890
a20 Caries Caries 0.5977 .544 .889
a21 Periodontal Periodontal 0.2615 .208 .895
a22 Selante Sealant 0.5566 .499 .890
a23 Hipoplasia Hypoplasia 0.5423 .482 .890
a24 Halitose Halitosis 0.5678 .505 .890
a25 Analgesia Analgesia 0.4157 .356 .893
a26 Celulite Cellulitis 0.6262 .574 .888
a27 Fistula Fistula 0.5854 .525 .889
a28 Temporomandibular Temporo mandibular 0.2536 .220 .894
a29 Hiperemia Hyperemia 0.5044 .438 .891
a30 Apicectomia Apicoectomy 0.3880 .335 .893